See also [https://www.archlinux.org/packages/?q=usb_modeswitch usb_modeswitch] package in [community], which you may need in future since in udev-157 modem-modeswitch has been renamed and changed as described in the [http://git.kernel.org/?p=linux/hotplug/udev.git;a=commit;h=4dd9b291354e76f34b0d6d7b5c3b28d03a624418 commit]. This package does not need any modifications, just install it.

Also you can create udev's config: /etc/udev/rules.d/15-huawei-e1550.rules

Also you can create udev's config: /etc/udev/rules.d/15-huawei-e1550.rules

Now you have new 2 or 3 /dev/ttyUSB* devices.Most likely first of them (ttyUSB0 if you had not such devices before)

Now you have new 2 or 3 /dev/ttyUSB* devices.Most likely first of them (ttyUSB0 if you had not such devices before)

is PPP compatible modem. Use it as usual with pppd, kppp, gnome-ppp, network-manager, etc.

is PPP compatible modem. Use it as usual with pppd, kppp, gnome-ppp, network-manager, etc.

+

+

''Note: If you want to use your 3G modem with network-manager, you have to install the package modemmanager (it's in the extra repository) and then restart the networkmanager (usually /etc/rc.d/networkmanager restart). Now you can 'Enable Mobile Broadband' in your networkmanager applet in GNOME''

Some operators return USSD result in PDU encoding, so you should check proper decoding method.

* AT+CSQ - get signal quality (AT+CSQ=?)

* AT+CSQ - get signal quality (AT+CSQ=?)

* AT+GMI - get manufacturer

* AT+GMI - get manufacturer

* AT+GMM - get model

* AT+GMM - get model

* AT+GMR - get revision

* AT+GMR - get revision

+

* AT+GMN - get IMEI

* AT+COPS? - get operator info

* AT+COPS? - get operator info

+

* AT^CARDLOCK="NCK-code" - unlock modem. NCK-code should be calculated by IMEI. After that modem can work with any GSM-provider.

+

* AT^SYSCFG=mode, order, band, roaming, domain - System Config

+

+

Mode:

+

* 2 Automatic search

+

* 13 2G ONLY

+

* 14 3G ONLY

+

* 16 No change

+

+

Order:

+

* 0 Automatic search

+

* 1 2G first, then 3G

+

* 2 3G first, then 2G

+

* 3 No change

+

+

Band:

+

* 80 GSM DCS systems

+

* 100 Extended GSM 900

+

* 200 Primary GSM 900

+

* 200000 GSM PCS

+

* 400000 WCDMA IMT 2000

+

* 3FFFFFFF Any band

+

* 40000000 No change of band

+

+

Roaming:

+

* 0 Not supported

+

* 1 Roaming is supported

+

* 2 No change

+

+

Domain:

+

* 0 CS_ONLY

+

* 1 PS_ONLY

+

* 2 CS_PS

+

* 3 ANY

+

* 4 No change

+

+

== Sending SMS ==

+

+

You can use gammu.

+

+

Edit ~/.gammurc

+

[gammu]

+

port=/dev/ttyUSB0

+

connection=at

+

name=huawei e1550

+

model=

+

+

The run command:

+

gammu sendsms TEXT +7123456789 -text qwe

+

+

== USSD Requests ==

+

+

Use [https://aur.archlinux.org/packages.php?ID=38046 huawei-ussd] package. Or use [https://github.com/gnomeby/ussd ussd.php] tool.

+

+

== Success Stories ==

+

2010-August-03: I didn't do anything, I just installed usb_modeswitch-1.1.3-2 and my kernel is 2.6.33. In the syslog (/var/log/messages.log) the usb_modeswitch can automatically configure the modem correctly but I still cannot connect to the internet using gnome network manager applet, then I installed the modemmanager package and restart the networkmanager service. Everything is working properly now.

See also usb_modeswitch package in [community], which you may need in future since in udev-157 modem-modeswitch has been renamed and changed as described in the commit. This package does not need any modifications, just install it.

Also you can create udev's config: /etc/udev/rules.d/15-huawei-e1550.rules

Connecting internet

Now you have new 2 or 3 /dev/ttyUSB* devices.Most likely first of them (ttyUSB0 if you had not such devices before)
is PPP compatible modem. Use it as usual with pppd, kppp, gnome-ppp, network-manager, etc.

Note: If you want to use your 3G modem with network-manager, you have to install the package modemmanager (it's in the extra repository) and then restart the networkmanager (usually /etc/rc.d/networkmanager restart). Now you can 'Enable Mobile Broadband' in your networkmanager applet in GNOME

AT commands

There are some usefull commands:

AT^U2DIAG=0 - the device is only Modem

AT^U2DIAG=1 - device is in modem mode + CD ROM

AT^U2DIAG=255 - the device in modem mode + CD ROM + Card Reader

AT^U2DIAG=256 - the device in modem mode + Card Reader

AT+CPIN=<PIN-CODE> - enter PIN-code

AT+CUSD=1,<PDU-encoded-USSD-code>,15 - USSD request, result can be found (probably) in /dev/ttyUSB2.

USSD Requests

Success Stories

2010-August-03: I didn't do anything, I just installed usb_modeswitch-1.1.3-2 and my kernel is 2.6.33. In the syslog (/var/log/messages.log) the usb_modeswitch can automatically configure the modem correctly but I still cannot connect to the internet using gnome network manager applet, then I installed the modemmanager package and restart the networkmanager service. Everything is working properly now.